Component selectionDesign tips
Characteristics
The flyback converter is an isolated version of the buck-boost converter. Depending on the winding ratio of the coupled power inductor, the input voltage can be higher, lower or equal to the output voltage.
The isolated output feedback can be acquired either directly from a winding of the transformer or by using an optocoupler.
The flyback is the simplest solution for an isolated switching power supply (SMPS) with low power output. For power ratings above 50 W usually more efficient topologies are used.
Application Notes
- ANP010 Measurement DC-DC Switching Regulators
- ANP044 Impact of the layout, components, and filters on the EMC of modern DC/DC switching controllers
- ANP062 LC Filter Design With MLCCs: Why The Applied Voltage Matters
- ANS004 Input Filter for MagI³C Power Modules
- RD001 6 W Bipolar isolated auxiliary supply for SiC-MOSFET and IGBT gate driver
- RD002 6 W Unipolar isolated auxiliary supply for SiC-MOSFET and IGBT gate driver
Products of interest
Videos
Würth Elektronik Webinar: Magnetics design & selection – intermediate level
Videos
Webinar: Feedback loop compensation of current-mode Flyback converter